Combination coal and gas cooking-stove.



Iowa.

y G.vw'. GRAVES.

ycomnmnore com AND G As cooKmG s GI W. GRAVES.

GAS COOKLNG' STOVE.

coMBmAnoN coAL AND APPLICATION FILED NOV. 9, 1914.

1,1so-o29.

Patented Apr. 18

mw. GRAVES. 'COME-[NATION COAL AND GAS C00KING STOVE.

APPLICATIUN FILED 9, i914.

Patented Alpn 18, 1916.

5 SHEETSr'SHEET 5.

ds ammira To `alllfwhom 't-magi] honcern.' I

oFoINciNNA'rI, omo, A conPonA'Tion-or omo.;

Be it known that I, GEORGE GRAVES,

of Cincinnati, in the-countyof' Hamilton nation do hereby declare thefollowing to be a and State of Ohio, have invented. certain `-new and#useful" .Improvements in Combi- Coal aiidGas Cooking-Stoves and Igclear," and exact 'description of f the same, -'reference'being" to theaccompanying Adrawings,:forming 1a part of' this speciiicafl tion, andtojthe lreference-numerals marked' fthereon.

My present invention has-for its object' to' provide an 'improved formof, cooking stove in AWhich the source of heat,'both for heating the-topsurface and the oyen may be obtained, either from fuel.

' wood, consumed in the fire-box, or from gas l 2lil discharged throughsuitable burners and the invention coinprehends an arrangement of partswhereby such economy of space is obtainedv that. an'- oven ofserviceable size is provided, While the cubical dimensionsv of thebodyfof the-stove and the surface area :of top are notincreased `by.reason of the y dual heating means.

To these and 'other ends,fthe invention 'consists -certainimprovementsand combinations of-parts, all as willbe more fully de-'scribed`,"the^novlel features being pointed out in the claimsat the endof the specification.

'- In the drawings: Figure 1 is a front ele- .vation ofv afstoveconstructed in accordance viewl showing the position; Fig.;v 8 is` I'view on the line '8-.8 of Fig. 6 including with my present invention;Fig; 2 is a .rear elevation thereof Fig. 3 is an elevation of thetire-box end of the stove ,Fig- 4 is a view of the opposite end; Fig. isa top plan i jvieiv; Fig.V 6 is a vertical sectional view 'through theoven,

showing the 'gas Aburner in'inopeiative position; Fig. 7 lis asimilargas burner in operative a' horizontal sectional the supply pipe; Fig.9'is a similar view on lan enlarged-'scale on the line Q--9 of Fig. 7including thesupplyl pipe; Fig. 10 .is a de- ,ftailvertical sectionalview on the line.10.-10

g a-IIdI-FigQll is a detail horizontal onal't ,i'ew on theline 11-11 ofFig. 1. throughout .i 4,the)several i'iexvs..indieatei5the same-parts.

iHeretofor'e in the construction of combiing purposes;

such #as coa-l or respectively. l particularly in l-closed by the ldoor-7 forming apart ofthe' former and connected -theretolbyga verticalwall13.

vations'toves. of this character the ditculty I, y IooMBiNA'rioN'ooAL-Anp enscooiiiirasirovi r gas'- burners, especiallyinView of the Vfact Specication of Letters Patent.. ,i i Patentedp1- -18 liappiieatibjiea November 9,1914. serialize.farina?.,` i

that it is .necessary to provide adequate- 'means for alsorheatiiig aportion -o-"theQ stove top Vby the use of gas burnersand to' zallow a.suitable location` f or the' accommodation of the gas burner employedforgbroil-f Generally.. tated it may be said tha-.tithe arrangement vofthe oven lchamber Athe walls of the stove ycasing .is such that theproducts vbox are carried downwardly at the of combustion from thefire-v rear of the stove, beneath the bottom ofthe oven Y and upwardly,from the fire-box, and thencegrearwardly where they are discharged intothe chimney.

In carrying out the invention I employ a stove having a casingcomprising a toprl', a re-box end 2, an opposite end wall, 4al bottom 4,andv front and rear Walls 5 and 6, The oven chamber., shown Figa and 7is normally stove casing (Figi) and it comprises the end Walls Sgand 9,a bottoinlO' and the ltop formed of the portions 1I and l12 Which'arearranged'in different 'horizontal planes, the being slight-lyvhiglierthan the latter The portion Y11 of the oven top, arranged at the forwardor `fire-box end of the stove, provides a recessin'the top of the ovenfor the accommodation Vof the burner 14- which is yused forbroilingpurposes.

The top 1 ofthe stove is divided into the portions A and B. by thetransversely 'extending partition 15 which is arranged at the ,end whichyis remote above the i'ei'ticaljwalll of the oventop.

The .portion of ,the stove top` at the right hand end of the structureindicated by B may` be -made of any desired size but in prac tice I deemitpreferable te gime it anarea of about the same proportion as the partA `Which is heated directly from the fire-box 16. IThe top portion-of'ytlie stove body also comprises a horizontal plate 12 which may be acontinuation ofthe lower part ofthe oven top 19.. This being a stepbelowv the higher portion -11 of thev oven top provides thegdeeper spaceneeessaryfor the accommodation of the seyeralburners 17 employedto1supply] .nea-t for: the

mately circulation of the lproducts l, closed 'by the usual stovecovers.

the'end thereof" into the' ing indicated by Ausual stove pipe.

-jnation of-Fig. 2

--helplate 12a may consist of approxiv hil'f ofthe vtop of the oven, butin order' to provide for the more satisfactory 4and even heating of thispart of the oven chamber, I deem 'it' desirable to provide the latter,in the upper right hand corner, with an offset top portion 12b whichforms a restricted flue 18.

The up-draft and downdraft iues ofthe stove are arranged on thel rear ofthe casing, thedowndraft flue beingindicated by 19 (Fig.V 2), theentrance'QO of which is loc Atedabove the portion 11 of the oven topwhile vthel lower end 2l opens into the circulating flue 22 beneaththe'oven chamber. .The lflue 22 is provided with a baffle late 23and isin'comm'unication with the en flue 24;jat the end of the oven, betweenthe walls vi-)and 9. lVithin this end flue are arranged b'afiie plates 25 and 26.which insure the of" combustion -into 'contact with the entire4"surface of the end 9 ofthe oven chamber. `The 11p-draft fine intowhichthe products of combustion are discharged andthrough which they areconducted into the chimney' is indicated by 27 the mouth or dischargeopening thereof bethe collar 28, to which the is fitted. From an examiitwill be observed that the 11p-draft flue 27 is arranged to cover thelargerportion of the'space. beneath section B h separates these parts isprovided a operating handle 30, so that adequate tilation maybe obtainedwhen the burnef" -17 lare in use, this being a provision that isespecially .desirable when the top B is The up-l 4draft flue is alsoarranged so as to extend into proximity withthe recessed top portion. ofthe oven, containing' the broiling burner 14..' so that when the latteris in operation, the .fumes may be allowed to escape fr ol'n the ovenchamber directly into the chimney. This is accompllshed by providrearwall of the oven an aperture v'iue 19,-and in providing the up-draftflue2T with an aperture 32,adjacent the opening-31.` and inv furtherarranging a double damper composed of the-'leaves and 34 which may beadjusted to simultaneously open both of said' apertures'. This damper inits normal condition is closed causing the V products of combustionissuing from the fire-boletol pass downwardly through the iue 19.'beneath the loven and upwardly at l 11p-draft flue 27, but when thedamper is in its? open position the products of. combustion may pass d1-rectly from' there-box into the adjacenu end of the flue 9.7.- thenceinfn the chunnevportion B'. of the stovef with the usual oven bottom. fthe stove top, and in the rear wall 6' 4curjved so that its outer endthe edge of the oven door, as shown, parand likewisegasao may escap intothe c at the top of the oven advantage that its operation may be easilyobserved. i

I have incorporatedinfthe arrangement of the auxiliary gas burner,employed for` heating the oven chamber, the novel feature possesses thefurther-'l of -so mounting the burner that it may be removed fromitsoperativeI position within theoven chamber 'to a position exteriorthereofby carrying it beneath a movable portion of vone of the sidewalls of the o ven.

In the preferred construction of the parts I provide a'side wall of theyoven with a movable section. or panel which may be moved inwardly toprovide a space between its lower edge and the bottom of the oventhrough which the burner may be introduced and which normally occupies avertical position irrespective of the location of the burner. The panelis provided with lug/s or projections which lserve as a support for theusual adjustable oven'shelf and for the false bottom which is utilizedin conjunction In illustrating this feature of the invention I haveshown a burner 40 which is pivoted in the lower bottom corner of theoven and preferably at the end of the latter remote from the tire-box.The pivotsare arranged so that the burner whenin inoperative positionwill stand in a vertical position inrear' of the line of the end wall 9,in the. space provided for the end flue 24C of the stove. and when theburner is to be used for heating purposes yit is rotated. into thehorizontall position above the bottom of the oven. The burner is pivotedat its inner end upon a lugv 4l entering the rear wall of the ovenwhile, at its forward endl it is journale'd upon the inner extremity ofthe gas inlet pipe 42 which is rigidly mounted in the casing of thestove and is is offset beyond ticularly `in Figs. 8 andi). Theadjustment of the burner is permitted by the movable section or' panel9,'r1 of the end wall 9 of the oven which is preferably hinged. asindicated -at 9b, so that it may be swung inwardly as indicated indotted lines in Fig. 6. yThis panel is provided on its inner surfacewith a series of lugs or projections 9c in horizontal alinementl withcorresponding projection 8c on the opposingwall of the oven,

for receiving the ends or edgeslof the oven shelf. The broiling opening3l which 1s utilized in conjunction with the burnerI 14-1neces'sitates-fthe introduction of .a small prois norinallyrlosed andthe'fals'e-bottoin, -oiheat circulating plate` which is emploveihj asshown in Fig.' .7'. causes an even distiibu-iA tion o f theproductsofcoiiibustioii when the oven is to be lieatedbv the Igas burner 0. u Inorder, to obtain the circulation of heated air within the oven when theburnerv through isl prevented when the burner 40 is i in inoperativeposition. la convenient means of accomplishing thisobject being tolocate the apertures-in the position shownin Fie.' 6', so that theburner will overlie them when it is adjusted. into inoperative positionexteiior ofthe oveii chamber. In order to pro-,-

i Y tect. the bui-ner, when/in the last mentioned position, against the.accumulation of soot .carried by the air current through the flue 2%, Iprovide a covering or hood therefor, indicated by 411e. which is oit'setfrom the oven wall 9 and foi-insa recess or pocketjfor the burner.II`his cover is also provided with a pliii'alit l'of apertures Ik?cbperating with `the apertures 9d;-

h yisheati jigv of theiovei'i by'a gas flame 'pOrtinbt-aii" to supportsecondary coinb'iistion. Inthe present 'structure this air is admittedthrough a passagel leading into the bottom of theoveiiV 'at its forwardedge,

' g'froni an opening beneath Athe oven door. This passage should bevclosed when the oven is heated by fuel consumed in the fire-box 16 andit should be opened more or less according to the intensitjT of theflame emitted from the burner i0 and iii order, therefore to govern-.theadiiiiss'ion of airunder these varying conditions, I have provided aysliding damper 46 connected bv the arm 47, with the crank Sion the valvestein 49, which extends lownwardly from the valve 50. `The latter issupplied with gas from the pipe 51. and. is arranged in front of theopen end of the intake pipe and the stein 49 being a continuation of thevalve handle is oscillated as the valve is ,opened and closed.

If desiredthe oven door 'a' may be provided withV a hook shapedprojection 5?) which surrounds the handle 52 of the valve in such amanner as to prevent' the latter from being accidentally opened, or'these partsfinay be so arranged as to` prevent access tol the valvehandle until the operator has opened the ovendoor.

I claim as my invention:

l. The combination with an oven casing having one/of its walls providedwith an opening and a gas burner adjustable through saidopening'intooperative position in the oven, orinoperative positionexterior there- :latter and arrang -operative position. f

of.. ofa movable closure for the opening-5 which occupies a positiontoclose said open-Y ingy when the ,burner is within the oven.

Q. The combination with an oven casing 'having one of its walls providedwith an aperture, a gas burner adjustable throughr the aperture intooperative position within the oven and into inoperative positionexterior thereof, of a movable closure for the aperture," shelf supportswithin the oven some of which are carried on the closure and a heatcirculating plate resting on the supports.

3. 'The combination with an oven casing having one of its walls providedwith an aperture. a gas burner adjustable through the aperture intooperative position within Athe oven and into inoperative positionexterior @tliereofLof a hinged closure for the :aperture swinging into`the `oven to permit the adjustment of 'the burner, shelf supports withinthe oven some of which are mounted on the closure anda heat circulatingplatev removabl)v carried on the supports,

I. The combination with an oven having one .of its sides provided with acomiiiunin in movable into andout ofthe oven',` of a closure for saidcompartment arranged to permit the movement of the burneriinto the ovenand adapted -to clo'se the compartment when the burner is'in thisposition.k

The combination with an oven having a side wall composed of an lupperstationary cating c'oinparti'nent.y and a gasburner thereadapted tooccupyits normal position when the burner is within theoven.`

6. The combination with an ovenliaving one of its vertical l""alls'composed of a stationary portion an a movable portion and a wall o'setfijonv li of a gas burner lo to'be moved into the tion of the wall lm,recess when the -biirn T. The coiiibiiiatio one of its vert-icalfilmovable portioii"\aiid a gas burner adjustable into and outoftlieiovenbeneath said movable portion va wall offset from the rrangedt-o closetheV s within the oven. 'ith an oven havii'ig when it is adjusted-into'aposition exterior .ills provided with av Lattei' to forni a recess` ltherein and adapted ten, said movable pord-itol-inclose the burner ofthe oven(` said a'jertioaliy wall and offsety wall being each piiovidedwith ventilating,

apertures and means fon the burner for cutting ofl' vthe l l* saidapertures when the burner is in the in- 8. The combination Jwith an ovenhaving one of its vertical side Y`alls provided with a swinging panel,hin and a gas burner Vmo` able into and out of ged'at its upper edge.

circulation )of .air through being so arranged that the ,panel may bead' justed, after the burner is moved into the oven, to close thepocket. i

9. A cooking stove comprisinga stove casing, a fire-box, an oventherein', said casing being formed tol provide a downdraft flue at theback-of the oven adjacentv (the fire boX, a cross draft flue atthebottom 'of the oven, an rip-draft iiue at the rear end .of the ovenand an outlet for the latter flue in rear of the oven.

l0. A cooking stove comprising .a casinor having a top, a fire-boxlocated beneath and arranged to heat one end portion of the top,

gas burners beneath the remaining part of' .the top, an ovenextendingbeneath both of Y said portions of the stove top having a topwall provided with a portion offset to form an upwardly extending recessbeneath the fire-boX-heated-portion of the stove top and a gas burnerarranged in said oven recess.

l1. A cooking stove comprising a casing having Li-top, an oven locatedinthe casing having a topk spaced from the top of the casing, andcomprising right andfleft hand portions arranged at different elevationsand forming a recess in the oven, a transverse wall between the ovenvtop YVand stove top dividingthe latter into separate parts, a fire-boxheating one end of said stove top and the oven', a gas burner forheating the other end of the stove top and a separate gas burneraccommodated in the recess in the top of the oven.

12. In a-c'o'oking stove, the combination with a' casing comprising atop', a fire-box arranged beneath one end thereof, anoven adjacent thefire-boxl having a top of two parts of different elevations spaced fromthe stove top, the higher portion being adjacentthere-box and forming arecess in the`oven, ofa transverse Wall rspace between the ove'nandstovetop, a gas burner located beneath the stove top and over theloiverportion .of the oven top and a gas burner also arranged in the recess nthe oven.

13. A cooking stove comprising a casing embodying a top, an oven thereinand a irebox at one end thereof, a partition between the oven and stovetop. dividing the latter closing the v into a lfire-bmr-heated-portionandan 1111-' heated portion,.a flue plate located vbetween the oven and.the yunheated portion of the stove topfand arranged to form arestricted flue over the portion of the top of the 'oven in reanof thepartition fsaidstove casing being also -arranged to form flues forcarry-l latter into a fire-boxheatedportion and anunheated portion,lsaid casing being formed `to provide tlues for conducting the productsof combustion from the lire-box into Contact with the oven at its rearside and end, a fluel plate disposed above the oven beneath the unheatedportion of `the stove top and forming a iue of restricted area above theoven in communication with the other fines.

15. A cooking stove comprising a casing, an oven therein and a fire-boxat one end of the oven, a partition intermediate the ends of thelovenand between it and the stove top, 'said casing being formed .to providea down-draft lueat the back of the oven', a cross draft flue at thebottom of the oven, and an lip-draft iue at the end of the latter, aplate located above the end portion of the oven in' rear of thepartition arranged to i'orm a Hue of restrictedl area communicating withthe up-draft Hue at 'the end of the oven.

16. In a cooking. stove the combination with a stove casing having atire box, an oven in the casing comprising iXed Aside walls havingguides thereon and draft tlue's for conducting the products of.combustion from the fire box into contact with the walls of the oven,of a gas burner arranged at the bottom of the oven, a gas ovenl bottomadapted to be supported on the guides of the side Walls and to coperatewith the latter to form a. lower gas heating chamber and an lupperbaking chamber, one of said side walls ofthe oven'being arranged toprovide a cir culating air passage connecting said heating and bakingchambers of the oven and thel other side wall having an outlet leadinginto one of the draft lues.

GEORGE lV. GRAVES. lVitnesses:

RUSSELL B. GnrrriTi-r, HARRmr T. VAX'.

